Improvement in machines for stretching silk



" l'o all Vwhom it may concern.-

- Be it known that I, GEORGER. KENNEDY, of the vention belongs to make and use' the same, I will prolnation with two or more stretching-pulleys, or grooves, p of` nl iequaldiaineters, secured tothe same shaft, olfan adjustable friction stretching-pulley,,substantially as l and fol-the purposes hereinafter explained.

i holes, a, to receive Vthe screws b,whereby said stand, with its friction Unread-stretching pulley F, can be i ing pulleys G G',`which are secured to ajournal'l-l, `ittedto turn inahearing I, on the topof' afstand J,

i-diareters, as fully indicated in full and dotted-lines.

thereon tovkeep the threadsfseparated, so as to run ing pulleys GG', while'a stop-lever K is pivoted atv d, between earsV on the base of the stand J. The

i with a;,hook e, which rests upon the thread when the machine-is inpperation, as shown in the drawings, and,

. iiiiaagm 5' i mit Gillis.

p. GEORGE n. KENNEDY, or WORCESTER,- MAs'sAoHUsE'rf-rs.

Letters-Patent No. 103,051, dated Mag/17, 1570.

IMraQVEMENT IN MACHINES FORKSTRETCHI'NG SILK, am.

The Schedule referred to in these Letters Patent and making part of the same city and county ot' Worcester, and Commonwealth of Massachusetts, have made certain new and useful I'm.- provements in Machines for Stretching Silk and `other fibrous threads composedof several separate strands; and I do hereby declare that the following is a full,

ing had to the accompanying drawings forming part of this specification, in whichv Figure l represents a top orplan view'ofmy hn- Figure 2*.represents a side View machine. f y

-To enable those-skilledin the art to which my iu-.

of my improved ceedto describe it more in detail.

The nature of my invention'consists in thc combilnfthe drawings;- y y A representsthe hed of the machine, upon the top of w'hichissecured a plate B," having a doyetailed groove O, to receive a dovetailed projection on the bottom ofthe stand D. l. p

The `base E of thc stand D is provided with screwadjusted nearer to or `farther from thetlnead-,stretch- `secured to the base A. f

The stretching-pulleys G G' are made of unequal V1n this instance they" are castin one piece, but they may be made separately, and arranged si'd'e 'by side upon the saine shaft, oraconepulley may be employ- `ed as a substitute therefor,` guides being arranged upon different diameters of the same pulley.

A pin c', projects from the innerside of the stretch-v long arm Lof saidleyer projects up, and is lprovided Whcnin suchiposition,` the short arm M of said lever G' and the friction stretching-pulley F.

' is tlnownback'towards the journal H, so as .to be out of the path of the pin c, when the machine is in operation and the threadis running properly, but, as soon as the thread breaks, the long -arm of lever K falls, thereby bringing linger j' ofarm M in the path of pin c, thus stopping the stretching-pulleys G G', which are driven by a band runningnpon pulley N.

Arm M is made o`f sufficient length to extend above the center ofthe journal H, whereby, when pin c strikes the ltop of finger f, `there is notendeney to cant-arm M back, thus insuring a positive and suddenstop to .the stretching-pulleys when the thread breaks.

rlhe operation is as follows:` Y The silk being dampened and wound upon a hobbin fitted to turn'upon ajournal properly support-ed, and combined with a friction device whereby any desired 'degree ot' friction can be applied to saidbobbin, the

end ofthe silk is wound twice around the small stretching-pulley .G,then'over the friction stretching-pulley F, which turns upon a stationary' journal upon the stand E, then back, and passed twice around the stretching-pulley G, and thence back above the friction stretching-pulley F, as indicated by the arrow in Iig. 2, to a bobbin or spool turned by friction, upon which it is wound as fast as it is delivered by thc stretching-pulley G.

From the foregoing description it will be seen that my machine is not only compact and perfect iu its operation, but that any desired degree of stretch can be given 1to the silk or thread run through it, by simplyadj ust- Y ing stand D nearer to or further from the stretchingpulleys G G', since the stretch of the thread is in proportion to thedistancc-between the stretching-pulleys G Other things heilig equal, the'greater the distance theless the tension and stretch ofthe thread are.

Having described myimproved` machine .for stretching silk and other threads. y

What I claim therein as new and of my invention and desire to secure by .Letters Patent, is

The combination with the stretching-pulleys G G', arranged on the shaft H, ofthe friction stretching-pnl- ]ey F, supported on an adjustable stand, arranged in the grooved plate B, whereby the degree of stretch can be varied, substantially as described. GEORGE R. KENNEDY.

Witnesses: i

'.LHosH. Dones, Geo. H. MILLER, 

